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【简答题】
摩尔质量为125 g·mol -1 的某吸光物质的摩尔吸收系数为ε=2.5×105 L·mol -1 ·cm -1 ，当稀释20倍后，在1.0cm的吸收池中测定吸光度A=0.60，试计算稀释前每升溶液中含有该物质多少克?
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【单选题】我国各少数民族都按照本民族的传统习俗欢度节日,如:藏族有藏历新年、雪顿节,蒙古族有那达慕,傣族有泼水节。我国尊重少数民族的不同习俗表明了( )
A.
矛盾具有特殊性
B.
矛盾具有普遍性
C.
矛盾具有多样性
D.
矛盾的性质取决于人的需要
【简答题】网络安全的【1】性是指数据末经授权不能进行改变的特性,即信息在存储或传输过程中保持不被修改、不被破坏和丢失的特性。
【单选题】我国各少数民族都按照本民族的传统习俗欢度节日,如:藏族有藏历新年、雪顿节,蒙古族有那达慕,傣族有泼水节。我国尊重少数民族的不同习俗表明了( )
A.
坚持矛盾的特殊性
B.
坚持矛盾的普遍性
C.
坚持矛盾的斗争性
D.
坚持矛盾的统一性
【单选题】Is your bike broken? Let__________you.
A.
me to help
B.
I help
C.
me help
D.
I to help
【简答题】I will do everything I can to help him.
【单选题】There are a lot students in the classroom. Some are reading. _____ are writing. [ ]
A.
Other
B.
The other
C.
another
D.
Others
【简答题】阅读理解。 As a father, I always do my best to help my son, Peter. I like to help him with his study. I encourage him to join team sports. I send him to the summer camp if he wants to go. I also teach him ...
【简答题】As a father, I always do my best to help my son, Peter. I like to help him with his study. I encourage him to join team sports. I send him to the summer camp if he wants to go. I also teach him to be ...
【单选题】In the course of my reading I had come across a case where, many years ago, some hunters on our Great Plains organized a buffalo hunt for the entertainment of an English earl and to provide some fresh...
A.
the earl's ancestor turned out to be the anaconda
B.
the earl is capable of committing wanton cruelty
C.
the anaconda is easily satisfied
D.
the anaconda does not harm other animals except when it is hungry
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